fixes for latest vectorz snapshot
generalise some functions in core.clj
update to latest vectorz release
test with latest core.matrix sparse features
misc edits
Merge branch 'develop' of https://github.com/mikera/vectorz-clj.git into develop
update to latest core.matrix release
Merge branch 'develop' of https://github.com/mikera/vectorz-clj into develop
Updated project.clj from pom.xml.

Increased version numbers for core.matrix and vectorz.